SpringMVC——整合SSM

SpringMVC——整合SSM

1.建立数据库

CREATE DATABASE `ssmbuild`;

USE `ssmbuild`;

DROP TABLE IF EXISTS `books`;

CREATE TABLE `books` (
  `bookID` INT(10) NOT NULL AUTO_INCREMENT COMMENT '书id',
  `bookName` VARCHAR(100) NOT NULL COMMENT '书名',
  `bookCounts` INT(11) NOT NULL COMMENT '数量',
  `detail` VARCHAR(200) NOT NULL COMMENT '描述',
  KEY `bookID` (`bookID`)
) ENGINE=INNODB DEFAULT CHARSET=utf8

INSERT  INTO `books`(`bookID`,`bookName`,`bookCounts`,`detail`)VALUES 
(1,'Java',1,'从入门到放弃'),
(2,'MySQL',10,'从删库到跑路'),
(3,'Linux',5,'从进门到进牢');

2.基本环境搭建

1. 新建一个Maven项目（命名为：ssm-01）！，并添加web支持。

2. 先按照下面的目录图建立各种文件

   

   

3. 导入相关的pom依赖

<dependencies>

    
    <dependency>
        <groupId>org.projectlombokgroupId>
        <artifactId>lombokartifactId>
        <version>1.18.10version>
        <scope>providedscope>
    dependency>

    
    <dependency>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-properties-migratorartifactId>
        <version>2.2.2.RELEASEversion>
    dependency>
    
    <dependency>
        <groupId>junitgroupId>
        <artifactId>junitartifactId>
        <version>4.12version>
    dependency>
    
    <dependency>
        <groupId>mysqlgroupId>
        <artifactId>mysql-connector-javaartifactId>
        <version>5.1.47version>
    dependency>
    
    <dependency>
        <groupId>com.mchangegroupId>
        <artifactId>c3p0artifactId>
        <version>0.9.5.2version>
    dependency>

    
    <dependency>
        <groupId>javax.servletgroupId>
        <artifactId>servlet-apiartifactId>
        <version>2.5version>
    dependency>
    <dependency>
        <groupId>javax.servlet.jspgroupId>
        <artifactId>jsp-apiartifactId>
        <version>2.2version>
    dependency>
    <dependency>
        <groupId>javax.servletgroupId>
        <artifactId>jstlartifactId>
        <version>1.2version>
    dependency>

    
    <dependency>
        <groupId>org.mybatisgroupId>
        <artifactId>mybatisartifactId>
        <version>3.5.2version>
    dependency>
    <dependency>
        <groupId>org.mybatisgroupId>
        <artifactId>mybatis-springartifactId>
        <version>2.0.2version>
    dependency>

    
    <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-webmvcartifactId>
        <version>5.1.9.RELEASEversion>
    dependency>
    <dependency>
        <groupId>org.springframeworkgroupId>
        <artifactId>spring-jdbcartifactId>
        <version>5.1.9.RELEASEversion>
    dependency>
dependencies>

4. Maven资源过滤设置

<build>
    <resources>
        <resource>
            <directory>src/main/javadirectory>
            <includes>
                <include>**/*.propertiesinclude>
                <include>**/*.xmlinclude>
            includes>
            <filtering>falsefiltering>
        resource>
        <resource>
            <directory>src/main/resourcesdirectory>
            <includes>
                <include>**/*.propertiesinclude>
                <include>**/*.xmlinclude>
            includes>
            <filtering>falsefiltering>
        resource>
    resources>
build>

5. 建立基本结构和配置框架

• com.cm.pojo

• com.cm.dao

• com.cm.service

• com.cm.controller

• mybatis-config.xml

<configuration>

configuration>

• applicationContext.xml

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd">

beans>

3.Mybatis层编写

1. 数据库配置文件 database.properties

   注意：根据你自己的数据库信息填写。

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssmbuild?useSSL=true&useUnicode=true&characterEncoding=utf8
jdbc.username=root
jdbc.password=123456

2. IDEA关联数据库

3. 编写MyBatis的核心配置文件

   
   
   <configuration>
       
       <typeAliases>
           <package name="com.kuang.pojo"/>
       typeAliases>
       <mappers>
           <mapper resource="com/kuang/dao/BookMapper.xml"/>
       mappers>
   
   configuration>
   

4. 编写数据库对应的实体类 com.kuang.pojo.Books

   使用lombok插件！

   package com.cm.pojo;
   
   import lombok.AllArgsConstructor;
   import lombok.Data;
   import lombok.NoArgsConstructor;
   
   @Data
   @AllArgsConstructor
   @NoArgsConstructor
   public class Books {
          
       private int bookID;
       private String bookName;
       private int bookCounts;
       private String detail;
   }
   

5. 编写dao层的 BookMapper接口！

   package com.cm.dao;
   
   import com.cm.pojo.Books;
   
   import java.util.List;
   
   public interface BookMapper {
          
   
       //增加一个Book
       int addBook(Books book);
   
       //根据id删除一个Book
       int deleteBookById(int id);
   
       //更新Book
       int updateBook(Books books);
   
       //根据id查询,返回一个Book
       Books queryBookById(int id);
   
       //查询全部Book,返回list集合
       List<Books> queryAllBook();
   
       // 根据书名查询数据
       Books queryBooksByName(String bookName);
   }
   

6. 编写接口对应的 BookMapper.xml 文件，需要导入MyBatis的包！

   
   
   
   <mapper namespace="com.cm.dao.BookMapper">
   
       
       <insert id="addBook" parameterType="Books">
           insert into ssmbuild.books(bookName,bookCounts,detail)
           values (#{bookName}, #{bookCounts}, #{detail})
       insert>
   
       
       <delete id="deleteBookById" parameterType="int">
           delete from ssmbuild.books where bookID=#{bookID}
       delete>
   
       
       <update id="updateBook" parameterType="Books">
           update ssmbuild.books
           set bookName = #{bookName},bookCounts = #{bookCounts},detail = #{detail}
           where bookID = #{bookID}
       update>
   
       
       <select id="queryBookById" resultType="Books">
           select * from ssmbuild.books
           where bookID = #{bookID}
       select>
   
       
       <select id="queryAllBook" resultType="Books">
           SELECT * from ssmbuild.books
       select>
   
       
       <select id="queryBooksByName" resultType="Books">
           select * from ssmbuild.books where bookName = #{bookName}
       select>
   mapper>
   

7. 编写Service层的接口和实现类

   接口：

   package com.cm.service;
   
   import com.cm.pojo.Books;
   
   import java.util.List;
   
   //BookService:底下需要去实现,调用dao层
   public interface BookService {
          
       //增加一个Book
       int addBook(Books book);
       //根据id删除一个Book
       int deleteBookById(int id);
       //更新Book
       int updateBook(Books books);
       //根据id查询,返回一个Book
       Books queryBookById(int id);
       //查询全部Book,返回list集合
       List<Books> queryAllBook();
       // 根据书名查询数据
       Books queryBooksByName(String bookName);
   }
   

   实现类：

   package com.cm.service;
   
   import com.cm.dao.BookMapper;
   import com.cm.pojo.Books;
   
   import java.util.List;
   
   public class BookServiceImpl implements BookService {
          
   
       //调用dao层的操作，设置一个set接口，方便Spring管理
       private BookMapper bookMapper;
   
       public void setBookMapper(BookMapper bookMapper) {
          
           this.bookMapper = bookMapper;
       }
   
       public int addBook(Books book) {
          
           return bookMapper.addBook(book);
       }
   
       public int deleteBookById(int id) {
          
           return bookMapper.deleteBookById(id);
       }
   
       public int updateBook(Books books) {
          
           return bookMapper.updateBook(books);
       }
   
       public Books queryBookById(int id) {
          
           return bookMapper.queryBookById(id);
       }
   
       public List<Books> queryAllBook() {
          
           return bookMapper.queryAllBook();
       }
   
       public Books queryBooksByName(String bookName) {
          
           return bookMapper.queryBooksByName(bookName);
       }
   }
   

4.编写Spring层

1. 配置Spring整合MyBatis，我们这里数据源使用c3p0连接池；

2. 编写Spring整合Mybatis的相关的配置文件： spring-dao.xml

   
   <beans xmlns="http://www.springframework.org/schema/beans"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns:context="http://www.springframework.org/schema/context"
          xsi:schemaLocation="http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans.xsd
   http://www.springframework.org/schema/context
   https://www.springframework.org/schema/context/spring-context.xsd">
   
       
       
       <context:property-placeholder location="classpath:database.properties"/>
   
       
       
       <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
           
           <property name="driverClass" value="${jdbc.driver}"/>
           <property name="jdbcUrl" value="${jdbc.url}"/>
           <property name="user" value="${jdbc.username}"/>
           <property name="password" value="${jdbc.password}"/>
   
           
           <property name="maxPoolSize" value="30"/>
           <property name="minPoolSize" value="10"/>
           
           <property name="autoCommitOnClose" value="false"/>
           
           <property name="checkoutTimeout" value="10000"/>
           
           <property name="acquireRetryAttempts" value="2"/>
       bean>
   
       
       <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
           
           <property name="dataSource" ref="dataSource"/>
           
           <property name="configLocation" value="classpath:mybatis-config.xml"/>
       bean>
   
       
       
       <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
           
           <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
           
           <property name="basePackage" value="com.cm.dao"/>
       bean>
   
   beans>
   

3. Spring整合service层

   
   <beans xmlns="http://www.springframework.org/schema/beans"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns:context="http://www.springframework.org/schema/context"
          xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">
   
       
       <context:component-scan base-package="com.cm.service" />
       <import resource="spring-dao.xml"/>
   
   
       
       <bean id="BookServiceImpl" class="com.cm.service.BookServiceImpl">
           <property name="bookMapper" ref="bookMapper"/>
       bean>
   
   
       
       <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
           
           <property name="dataSource" ref="dataSource" />
   bean>
   

5.SpringMVC层

1. web.xml

   
   <web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
            xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
            version="4.0">
   
       
       <servlet>
           <servlet-name>DispatcherServletservlet-name>
           <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
           <init-param>
               <param-name>contextConfigLocationparam-name>
               <param-value>classpath:applicationContext.xmlparam-value>
           init-param>
           <load-on-startup>1load-on-startup>
       servlet>
       <servlet-mapping>
           <servlet-name>DispatcherServletservlet-name>
           <url-pattern>/url-pattern>
       servlet-mapping>
   
       
       <filter>
           <filter-name>encodingFilterfilter-name>
           <filter-class>
               org.springframework.web.filter.CharacterEncodingFilter
           filter-class>
           <init-param>
               <param-name>encodingparam-name>
               <param-value>utf-8param-value>
           init-param>
       filter>
       <filter-mapping>
           <filter-name>encodingFilterfilter-name>
           <url-pattern>/*url-pattern>
       filter-mapping>
   
       
       <session-config>
           <session-timeout>15session-timeout>
       session-config>
   
   web-app>
   

2. spring-mvc.xml

   
   <beans xmlns="http://www.springframework.org/schema/beans"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xmlns:context="http://www.springframework.org/schema/context"
          xmlns:mvc="http://www.springframework.org/schema/mvc"
          xsi:schemaLocation="http://www.springframework.org/schema/beans
       http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd
       http://www.springframework.org/schema/mvc
       https://www.springframework.org/schema/mvc/spring-mvc.xsd">
   
       
       
       <mvc:annotation-driven />
       
       <mvc:default-servlet-handler/>
   
       
       <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
           <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
           <property name="prefix" value="/WEB-INF/jsp/" />
           <property name="suffix" value=".jsp" />
       bean>
   
       
       <context:component-scan base-package="com.cm.controller" />
   
   beans>
   

3. Spring配置整合文件，applicationContext.xml

   
   <beans xmlns="http://www.springframework.org/schema/beans"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://www.springframework.org/schema/beans
           http://www.springframework.org/schema/beans/spring-beans.xsd">
   
       <import resource="spring/spring-dao.xml"/>
       <import resource="spring/spring-service.xml"/>
       <import resource="spring/spring-mvc.xml"/>
   
   beans>
   

6.编写 Controller 和 视图层

1. Controller

   package com.cm.controller;
   
   import com.cm.pojo.Books;
   import com.cm.service.BookService;
   import org.springframework.beans.factory.annotation.Autowired;
   import org.springframework.beans.factory.annotation.Qualifier;
   import org.springframework.stereotype.Controller;
   import org.springframework.ui.Model;
   import org.springframework.web.bind.annotation.PathVariable;
   import org.springframework.web.bind.annotation.RequestMapping;
   
   import javax.servlet.http.HttpServletRequest;
   import java.util.ArrayList;
   import java.util.List;
   
   /*https://blog.kuangstudy.com*/
   
   @Controller
   @RequestMapping("/book")
   public class BookController {
          
   
       @Autowired
       @Qualifier("BookServiceImpl")
       private BookService bookService;
   
       @RequestMapping("/allBook")
       public String list(Model model) {
          
           List<Books> list = bookService.queryAllBook();
           model.addAttribute("list", list);
           return "allBook";
       }
   
       /*进入更改，给updateBook传递id这个参数*/
       @RequestMapping("/toUpdateBook")
       public String toUpdateBook(Model model, int id) {
          
           Books books = bookService.queryBookById(id);
           System.out.println(books);
           model.addAttribute("book", books);
           return "updateBook";
       }
   
       @RequestMapping("updateBook")
       public String updateBook(Model model, Books book) {
          
           System.out.println(book);
           bookService.updateBook(book);
           Books books = bookService.queryBookById(book.getBookID());
           model.addAttribute("books", books);
           return "redirect:/book/allBook";
       }
   
       @RequestMapping("/toAddBook")
       public String toAddBook() {
          
           return "addBook";
       }
   
       @RequestMapping("/addBook")
       public String addBook(Books books) {
          
           System.out.println(books);
           bookService.addBook(books);
           return "redirect:/book/allBook";
       }
   
       @RequestMapping("/del/{bookId}")
       public String deleteBook(@PathVariable("bookId") int id) {
          
           bookService.deleteBookById(id);
           return "redirect:/book/allBook";
       }
   
       @RequestMapping("/queryBook")
       public String queryBook(String queryBookName, Model model) {
          
           System.out.println("要查询的数据名称" + queryBookName);
           Books books = bookService.queryBooksByName(queryBookName);
           List<Books> list = new ArrayList<Books>();
   
           if(books == null) {
          
               model.addAttribute("error", "没有找到这本书");
               list = bookService.queryAllBook();
           }else {
          
               list.add(books);
               model.addAttribute("list", list);
           }
           return "allBook";
       }
   
       @RequestMapping("/login")
       public String login(String username, String password, HttpServletRequest request) {
          
           if(username.equals("张三") && password.equals("123456")) {
          
               System.out.println("用户名："+username+"\t密码："+password);
               request.setAttribute("username", username);
               request.setAttribute("password", password);
   
               return "allBook";
           }else {
          
               request.setAttribute("error", "用户名或密码不正确！");
               return "false";
           }
       }
   }
   

2. 视图层

   index.jsp

   <%@ page language="java" contentType="text/html; charset=utf-8"
            pageEncoding="utf-8"%>
   
   
   
       
       
   
   
   
       用户名：
   
       密码：
   
       
   
   
   
   

   login.jsp

   <%@ page contentType="text/html;charset=UTF-8" language="java" %>
   
   
       
   
   
   
       
   用户名：
           
       
       
   密码：
           
       
       
   
   
   
   
   

   false.jsp

   <%@ page contentType="text/html;charset=UTF-8" language="java" %>
   
   
       
   
   
       
   ${error}
   
   
   

   allBook.jsp

   <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
   <%@ page contentType="text/html;charset=UTF-8" language="java" %>
   
   
       
       
       
       
   
   
   
   
   
       
   
           <%
               String name = (String)request.getAttribute("username");
               String pwd = (String)request.getAttribute("password");
           %>
           
   用户名：<%=name %>
           
   密码：<%=pwd %>
       
   
       
   
           
   
               
   
                   
   
                       书籍列表 —— 显示所有书籍
                   
               
           
       
   
       
   
           
   
               新增
               显示全部书籍
   
           
           
   
               ${error}
           
           
   
               
   
                   
                   
               
           
       
   
       
   
           
   
               
                       
   
                   
   
                   
   
                       
   书籍编号
                       
   书籍名字
                       
   书籍数量
                       
   书籍详情
                       
   操作
                   
                   
   
                   
   
                   
   
                           
   ${book.getBookID()}
                           
   ${book.getBookName()}
                           
   ${book.getBookCounts()}
                           
   ${book.getDetail()}
                           
   
                               更改 |
                               删除
                           
                       
                   
                   
               
           
       
   
   

   addBook.jsp

   <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
   <%@ page contentType="text/html;charset=UTF-8" language="java" %>
   
   
   
       
       
       
       
   
   
   
   
       
   
           
   
               
   
                   
   
                       新增书籍
                   
               
           
       
       
   
           书籍名称：
   
   
   
           书籍数量：
   
   
   
           书籍详情：
   
   
   
           
       
   
   
   

   updateBook.jsp

   <%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
   <%@ page contentType="text/html;charset=UTF-8" language="java" %>
   
   
       
       
       
       
   
   
   
   
       
   
           
   
               
   
                   
   
                       修改信息
                   
               
           
       
   
       
   
           
           书籍名称：
           书籍数量：
           书籍详情：
           
       
   
   
   

小结

这个是我的第一个SSM整合案例；这里只实现了增删改查的基本操作。